Snow-plow



2 Sheets-Sheet I. A. B.. BLACK.

SNOW PLOW (No Model.)

No. 573,854. Patented De0.29, 1896.

MTNESSES rs PETERS 00., "(drummed WASHINGTON n c "UNITED STATES ATENTFries.

ALBERT B. BLACK, OF LEXINGTON, MASSACHUSETTS.

SNOW-PLOW.

SPECIFICATION forming part of Letters Patent No. 573,854, dated December29, 1896.

Application filed July 30, 1896. Serial No. 601,004. (No model.)

T0 ctZZ whom, it may concern:

Be it known that I, ALBERT B. BLACK, of Lexingl on, in the county ofMiddlesex and State of Massachusetts, have invented a new and usefulImprovementin Snow-Flows, of which the following is a specification.

My invention relates especially to that class of snow-plows which areprovided with two wings, one 011 each side, for the purpose of throwingsnow both to the right and the left; and it consists, chiefly, inproviding a snowplow with a pilot which can be turned about a centralvertical pivot, so as to throw the snow either to the right or left ofthe plow, as may be desired.

It also consists in certain details of construction herein belowreferred to.

My invention will be understood by reference to the drawings, in whichFigure 1 is a plan of a plow embodying my invention, Fig. 2 being alongitudinal section on line 2 2 of Fig. 1, and'Fig. 3 a longitudinalsection on line 3 3 of Fig. 1.

A is a frame, practically rectangular in shape, having at each frontcorner a post B, to which is hinged the front end of a wing O O. Theposition of these wings is preferably controlled by toggle-arms c,operated by a chain c, wound upon a shaft 0 operated by a hand-Wheel 0this construction being such that by turning one of the hand-wheels aits wing G G, will be thrown out at an angle to the center line of theplow and will be held there until the chain c is released by thehand-wheel, when the pressure of the snow will tend to close the wingagainst the body or frame of the plow. This is a simple means foroperating the wings. In order to lock these parts in proper position, itis bestto provide each shaft 0 with a suitable pawl and ratchet, so thatwhen the wheel has been turned into a proper position to throw out itswing the pawl may be engaged with the ratchet and hold the chain inplace. This structure A B C C, I prefer to mount upon a pair of runnersD, in order that when the plow is being transported it may be carriedwithout undue friction. For this purpose I provide the runners with twoinclines d upon their upper surface,and I also provide the frame A ofthe plow with corresponding in clines a and preferably join the twotogether by links a. I also connect theplow and the sled or runners witha chain connection d, operated by ,a shaft 01 and hand-wheel 61 (seeFig. 3,) this mechanism being such that upon turning the hand-wheel dthe chain cl is wound upon the shaft and draws the sled D forward withrelation to the frame A, this act sliding the inclines a up thecorrespondin g inclines 0?, thus lifting the frame and plow onto therunners, as shown in dotted lines in Fig. 2. It is also desirable thatthe frame and runners should be provided with guides to act with thelinks a" in steadying the sled and plow. I have shown such guides aattached to and projecting downward from the frame A, so that as theplow. moves with relation to the sled its movements will be guided uponthe outside by the links a and upon the inside by the guides (t From thefront end of the frameA projects a bar A, upon the under side of whichis pivoted an adjustable moldboard E. This moldboard is preferablycurved in shape, as shown more especially in Figs. 2 and 3, and isprovided with a lever-handle F. A hook e is provided, attached to theframe A and adapted to engage with eyes 6 c on said moldboard, thepurpose of this construction being to lock the moldboard either in theposition shown in Fig. 1 orin a position at right angles thereto, itbeing possible by unhooking the hook c to turn the plow about its pivotG by means of a handle-lever F, so that the hook e may be hooked intothe eye (2 By this means the plow is made either a right-hand or alefthand plow, as desired. Moreover, by closing one of the Wings 0 andadjusting the pilot as shown in Fig. 1 it will be seen that there may bemade practicallya plow having one straight side. I

The moldboard E is preferably pivoted as shown-that is to say, a bolt Gpasses down through the draw-beam H and whiffietree h and also throughthe beam A" and the tailpiece or eye G of the pilot.

The main advantages of this plow are that it may be used either as adouble plow, having its moldboard thrown to the right or left, asdesired, or it may be used as a right or left handed straightsided plow,and in either case it may be raised upon the sled or runners by verylittle expenditure of power. Upon releasing the shaft (1 the plow willbe pulled down upon the ground the instant any draft is put upon theshafts J.

It is evident that the number of inclines may be increased or diminishedaccording to the size of the plow and that, if preferred, friction-rollsmay be substituted for the inclines upon the plow, the purpose being tocause the plow to travel up an incline in rising upon the runners.

The moldboard above described should be of sufiicient length to throwout a furrow at least the width of the body of the plow, each of theadjustable side wings in turn being adapted to form, in a sense, acontinuation of the moldboard and finish the work which it begins. Forthis purpose, while the moldboard is best made curved in verticalsection, it should be substantially straight in horizontal sectionrather than angular, as with a pilot.

\Vhat I claim as my invention is 1. The adjustable plow above describedconsisting of a supporting-frame having two adjustable wings, one oneach side thereof and a pivoted moldboard straight in horizontal sectionand longer than the frame of the plow is wide and adapted to be swungeither to the right or left and when so swung to form a wall at an angleto the length of the plow, all as set forth.

2. The adjustable plow above described consisting of a supporting-framehaving two adjustable side Wings and a moldboard pivotally hung in frontthereof and adapted to be swung to form a continuation of either of saidwings, in combination with runners and means whereby said adjustableplow may be lifted upon said runners, as and for the purposes described.

The snow-plow and runners connected together in substantially the mannerabove described, said runners being provided with inclines upon theirupper surface and the frame of said snow-plow being provided withinclines upon its under surface corresponding with said runner-inclines,in combination with mechanism substantially as described whereby saidrunners and plow are moved with relation to each other and said plow islifted upon said runners, as set forth.

4. In combination, a snow-plow and runn ers, each provided with two ormore inclines adapted to cooperate in the manner described and meanswhereby said inclines may be moved with relation to each other, as setforth.

In testimony whereof I have set my hand this 24th day of July, 1806.

ALBERT B. BLACK. Vitnesses GEORGE O. G. COALE, E. A. GUILD.

